Custom pluralization functions?

[maranomynet]

FYI, I just made this PR against StephahHoyer's fork of this library.

StephanHoyer#1

I thought, you might find it useful too. :-)

[musterknabe]

Thanks,
after having a look at things, I think the easiest way to get the library to work in both CommonJS/Node and script tag environments is to add a little UMD wrapper.
And I'd love to add the custom pluralizer function support, while at it I might make some API breaking changes resulting in a 2.0. But not sure yet.